单GPS定位导航产品将淡出江湖

随着城市和交通路网建设的发展，以及用户对产品认知的提高，用户开始对GPS导航产品的有效性产生了质疑，根源则是现今绝大部分市场上正在使用的导航产品完全依赖于GPS进行定位，由于技术特性的限制，该类导航产品存在很大的缺陷，这些缺陷导致了频繁的误入歧路或者无法给用户有效指导，甚至用户反映用不如不用的结论。     

Waiting profiles: An efficient protocol for enabling distributed planning of container barge rotations along terminals in the port of Rotterdam

We consider the problem of aligning barge rotations with quay schedules of terminals in the port of Rotterdam. Every time a barge visits the port, it has to make a rotation along, on average, eight terminals to load and unload containers. A central solution, e.g., a trusted party that coordinates the activities of all barges and terminals, is not feasible for several reasons. We propose a multi-agent based approach of the problem, since a multi-agent system can mirror to a large extent the way the business network is currently organized and can provide a solution that is acceptable to each of the parties involved. We examine the value of exchanging different levels of information and evaluate the performance by means of simulation. We compare the results with an off-line scheduling algorithm. The results indicate that, in spite of the limited information available, our distributed approach performs quite well when compared to the central approach. In addition, our experiments indicate that an information exchange based on waiting profiles reduces the average tardiness per barge with almost 80% when compared to the situation with no information exchange. We therefore think that waiting profiles provide a promising protocol to tackle this problem.     

导航仪为何是电子狗杀手

目前，针对公路上的“电子眼”，一些车主购买了“反雷达测速器”（俗称电子狗）来对抗，目的是为了避免收到“牛肉干”（罚款单）。但是“电子狗”质量参差不齐，而且价格也不菲，这让车主对“电子狗”又爱又恨。随着国内导航软件技术的进步及导航地图更完整地包含了雷达测速器位置，“电子狗”功能整合在导航系统中已成为现实。导航仪价格的不断下降，     

是是非非撞车门

雷诺再次凭借厂商车队的身份获得了豁免，但损失的是自己的领军大将。阿隆索走、库比卡来，谁来领军！除非有一支逆天的手，否则，要想立转颓势，两三年之内，不可能。     

Tanker safety: Regulatory change

There are many regulatory changes being imposed on tanker operators of new and existing ships. This paper provides a brief on the main changes and their practical impact on design and operation i.e. the significant recent and upcoming revisions to IMO MARPOL Annexes I, II and VI, SOLAS and other regulations and the IACS Common Structural Rules.     

把玩2007 Smart Fortwo

Smart近日发布的新一代Fortwo延续独特的城市用微型车概念．新一代的发展更侧重于内涵．提高Fortwo的驾乘舒适性、操控性,主被动安全水平和更环保的排放。新车的外形设计在上一代的基础上渗入了新的设计语言．并试图改变第一代过于女性化的形象．以求新车能得到更多男性买家的认同。     

利用电流探针检测自动变速器电路故障

对于包含像电磁阀这样会产生相对高的电流输出元器件的电气系统,利用一个低电流探针和一定的工作经验,就能够对系统电路的工作状况进行快速检测。     

When are subsidies to trans-European network projects justified?

The trans-European transport network (TEN-T) encompasses the major planned transport infrastructure in Europe, ranging from high speed rail to port infrastructure. Projects in this category are considered priority projects and receive European subsidies; but these have been insufficient to get these projects off the ground. This paper addresses two research questions. First, it sketches the basic economics of cross-boundary infrastructure projects: what pricing and investment policies can we expect, what is the role of through traffic and high fixed costs of infrastructure? Second, it examines briefly what lessons the EU could draw from the experience of other existing federal funding institutions like the US and Germany. These ideas are used to propose a new subsidy scheme for the TEN-T projects.     

Reliable route guidance: A case study from Chicago

Reliable route guidance can be obtained by solving the reliable a priori shortest path problem, which finds paths that maximize the probability of arriving on time. The goal of this paper is to demonstrate the benefits and applicability of such route guidance using a case study. An adaptive discretization scheme is first proposed to improve the efficiency in computing convolution, a time-consuming step used in the reliable routing algorithm to obtain path travel time distributions. Methods to construct link travel time distributions from real data in the case study are then discussed. Particularly, the travel time distributions on arterial streets are estimated from linear regression models calibrated from expressway data. Numerical experiments demonstrate that optimal paths are substantially affected by the reliability requirement in rush hours, and that reliable route guidance could generate up to 5-15% of travel time savings. The study also verifies that existing algorithms can solve large-scale problems within a reasonable amount of time.